PM-350 On-Site Leak Detection Aerosol Photometer

• Optional 1-6 kinds of compound gas detectors
• The concentration display unit can be switched freely
• A variety of communication methods are available 
• Real-time monitoring via wired or wireless remote transmission, network transmission; 3-wire 4-20mA standard signal and standard bus RS485 (Modbus-RTU) output at the same time; optional frequency output 200-1000Hz, Hart protocol signal, 1-5V output, 2-wire 4-20mA, SMS alarm, wireless transmission (2-5km or unlimited distance); compatible with secondary instruments, data acquisition modules, PLC, DCS system, can drive related equipment.
• Standard infrared remote control, through the infrared remote control function keys, can be a one-touch operation, can realize on dangerous occasions without opening the cover operation, such as: modifying the alarm point, concentration calibration, zero calibration, silence, restore factory, and other functions.
• Rich human-machine interface
• 1.7" HD color screen, display real-time concentration, alarm status.
• High-temperature gas detection (optional)
• Optional high temperature and high humidity pre-treatment systems can detect high-temperature flue gas.
• Data recovery function, you can select partial or full recovery in case of misoperation
• The maximum value and minimum value can be set to be displayed or not
• Multiple alarm modes, a multi-directional indication of alarm status during alarm
• Include 2 groups of relay switch output, sound and light alarm (optional), display visual alarm.
• Alarm types include concentration alarm, fault alarm.
• Multiple alarm mode settings: low alarm, high alarm, interval alarm, weighted average alarm
• Misoperation identification function: concentration calibration misoperation is automatically identified and prevented to avoid bad human factors
• Zero-point automatic tracking, long-term use is not affected by zero-point drift
• Multi-stage calibration of target point to ensure linearity and accuracy of measurement
• Chinese or English interface can be selected
• Wide working temperature: -40～+70℃, support temperature compensation
• Record calibration log, maintenance log, fault record, troubleshooting countermeasures, sensor life expiration reminder, next concentration calibration time reminder function.
• Intrinsically safe circuit design, explosion-proof, with secondary lightning protection and anti-static capability. Meet national standards and resist high-intensity pulse surge current impact. With anti-reverse connection function. Meets EMI, EMC standards.

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